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EurekAlert! - Breaking News
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The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.
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Asteroid nudged by sunlight: Most precise measurement of Yarkovsky effect
Scientists on NASA's asteroid sample return mission, Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx), have measured the orbit of their destination asteroid, 1999 RQ36, with such accuracy they were able to directly measure the drift resulting from a subtle but important force called the Yarkovsky effect -- the slight push created when the asteroid absorbs sunlight and re-emits that energy as heat.
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'Personality genes' may help account for longevity
Researchers at Albert Einstein College of Medicine and Ferkauf Graduate School of Psychology of Yeshiva University have found that personality traits like being extroverted, enjoying laughter and staying engaged may also be part of the longevity genes mix that allows some people to reach age 100 and beyond. The findings published online May 21 in the journal Aging.
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Scientists evaluate different antimicrobial metals for use in water filters
Researchers from Princeton University in New Jersey used atomic force microscopy measurements to study the adhesion interaction between Escherichia coli bacteria and colloidal silver, silver nanoparticles, and copper nanoparticles, as well as the interactions of the bacteria and the three different types of metal to porous clay-based ceramic surfaces.
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Tiny planet-finding mirrors borrow from Webb Telescope playbook
NASA's next flagship mission -- the James Webb Space Telescope -- will carry the largest primary mirror ever deployed. This segmented behemoth will unfold to 21.3 feet in diameter once the observatory reaches its orbit in 2018.
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Slip-and-slide power generators
Researchers from Vestfold University College in Norway have created a simple, efficient energy harvesting device that uses the motion of a single droplet to generate electrical power.
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Sound increases the efficiency of boiling
Scientists at the Georgia Institute of Technology achieved a 17-percent increase in boiling efficiency by using an acoustic field to enhance heat transfer.
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A nanoclutch for nanobots
Chinese researchers have designed and tested simulations of a "nanoclutch," a speed regulation tool for nanomotors.
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Stanford psychologists examine how race affects juvenile sentencing
As the Supreme Court considers whether to further limit sentences given to juveniles, new research by Stanford psychologists shows how an offender's race shifts people's support for severe punishment.
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Cyber exercise partners help you go the distance
A new study testing the benefits of a virtual exercise partner shows the presence of a moderately more capable cycling partner can significantly boost the motivation -- by as much as 100 percent -- to stick to an exercise program.
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NASA satellites feed forecasters information as Bud becomes a hurricane
Bud has now become the first hurricane of the eastern Pacific Hurricane Season, as NASA visible and infrared satellite imagery revealed an organized structure of spiraling thunderstorms around the eye. Watches and warnings are already in effect for southwestern Mexico as Bud nears.
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NASA's TRMM satellite sees some heavy rainfall in Typhoon Sanvu
Tropical Storm Sanvu strengthened overnight as forecast and is now a Typhoon in the western North Pacific Ocean. NASA's Tropical Rainfall Measuring Mission satellite observed that most of the rainfall is falling in the eastern half of the storm.
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'Metamaterials,' quantum dots show promise for new technologies
Researchers are edging toward the creation of new optical technologies using "nanostructured metamaterials" capable of ultra-efficient transmission of light, with potential applications including advanced solar cells and quantum computing.
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Childhood cancer scars survivors later in life
Scars left behind by childhood cancer treatments are more than skin-deep. The increased risk of disfigurement and persistent hair loss caused by childhood cancer and treatment are associated with emotional distress and reduced quality of life in adulthood, according to a new study led by a Northwestern Medicine advanced practice nurse, Karen Kinahan, and based on data from the Childhood Cancer Survivor Study.
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University of Florida physicists set new record for graphene solar cell efficiency
Doping may be a no-no for athletes, but researchers in the University of Florida's physics department say it was key in getting unprecedented power conversion efficiency from a new graphene solar cell created in their lab.
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Brightly colored bird bills indicate good health
Troy Murphy has found female bill color reflects the health of the bird. Females with more colorful bills have higher antibody levels, indicating greater strength and the ability to fight off invaders.
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